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(Model.)- 4 Sheets-Sheet 1;

SJBORTO'N & C. H. WILLGOX.

TRIMMER FOR SEWING MACHINES.

No. 255,578. V A PatentedMar.Z8,-l882.

r M W AJ ('Mddel.) 4Shets-Sh|eet .2.

, S. BURTON & C. H."W'I LLCOX.

TRIMMER FOR SEWING MACHINES.

No. 255,578. Patented Man-28,1882.

(Moaei) I 4Sh'eets-Sheet 3. S. BORTON & G. H. WILLGOX.

'TRIMMER FOR'SEWING MAGHINES'.

No; 255,578. Patented Mar. 28,1882.

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TRIMMER FOR SEWING MACHINES.

Patented Mar. 28,1882.

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UNtTnD STATES PATENT owes STOCKTON BURTON, OF PHILADELPHIA,PENNSYLVANIA, AND CHARLES. H. WILLCOX, OF NEW YORK, N. Y., ASSIGNORS TOTHE WILLCOX 85 GIBBS SEWING MACHINE COMPANY, OF NEWYORK, N. Y.

TRIMMER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 255,578, dated March28,1882. Application filed October 14, 1880. (Model.)

To all whom it may concern: I

Beitknown that we, S'roon'ron BORTON, of

Philadelphia, in the county of Philadelphia and State of Pennsylvania,and CHARLES H.

WILLCOX, of New York, in the county and State of New York, have inventeda new and useful Improvement in Trimmers for Sewing- Maohines, whichimprovement is fullyset forth in the'following specification.

This invention has more particular reference to mechanism for trimmingthe edgesof knit fabrics as they are sewed by a sewing machine ofotherwise ordinary or suitable construction in the manufacture ofhosiery and similar goods. Thesewing-machinemaytnake the lock or otherusual form of stitch, but the chain-stitch is, on account of itselasticity, betteradapted to the uniting of knit fabrics, and theinvention is shown herein as embodied in a chain-stitch machine, beingthat now well known as the Willcox 86 Gibbs machine.

In the manufacture of hosiery the plan pursued with the best quality ofgoods has been toknit the several pieces with selvage edges and thenunite them by an overseam. This plan is, however, costly in time andlabor. In order to avoid this expenditurethe pieces have beencut from asheet of knit material and sewed together on a sewing-machine, the edges0 being automatically trimmed as the material is advanced by the feedmechanism. To prevent the raveling of the cut edges, machines making azigzag stitch have been employed; but the mechanism required for thispurpose 5 renders slow the action of the machine. Itis found that with ashort stitch and close trim- Ining a straight-ahead seam can b'e'madesuperior in appearance and equal in durability to that formed withzigzag stitching, and lit 40 tie, it. any, interior to the so-calledregularmade goods with selvage edges, while the rapidity of operation ofthe sewing-machine is not interfered with as when zigzag stitching isemployed. For the trimming of the edges,

v- 5 shears with one stationary and one vibratory cutter or blade havebeen commonly used, and,

beingbest adapted to the purpose, are used also in the presentinvention.

Thisimprovementis mainly intended to make a neat substantial seam, asclosely trimmed as may be desired, in an efficienomanner, with machinesmaking a straight-ahead seam, although it is obvious that the devicesemployed, or some of them, could be, used with machines making a zigzagstitch or in connection with other means for uniting the material. Toinsure the proper dividing ot' the fabric it is clamped. on both sidesof the stationary cutting-edge during the operation of the shears. Oneportion of the fabric is or may be heldbe- 6o tween the presserfoot andcloth or throat plate of the machine. For the other portion, which inhosiery work would be the strip to be trimmed off, a holding finger ordevice is used, the material being clamped between it and a suitablebearing-surface. This bearingsurface can be formed by the cloth orthroat plate; but it is preferably the surface of the stationary cutter,and is so shown herein. By having the cutting-edge in the same plane asthe bearingsurface referred to, as is the case when said surface is thatof the stationary entv ter, the material can be clamped by means of theholding linger or device closer to the cutting-edge and a narrower stripbe held so as 7 to be trimmed off from the main portion than wouldotherwise be possible or practicable.

The holding finger or device is made in-tegral with or is attached tothe presser-foot, or

it may be made independent thereof.

V Heretoforc in sewing-machine trimmers for hosiery work a finger hasbeen employed on the presser -foot to prevent the goods from curlingover and interfering with the operation of the cutters; but it is notintended'nor adapted to clamp the work like the holdingfingerinthisinvention. Theobjectot' the holding finger or device being to retainthe fabric in position against the action of the vibratorycutting-blade, which tends to push thefa'bric away from its fulcrum, thedesired effect can be obtained with sufficient pressure by means ofsmooth clamping-surfaces; but in practice better results are had bymeansof less pressure and the use ofa rough surface or teeth on 5 the holdingfinger or device, which teeth during the operating of cutting take intothe fabric and hold it stationary, but do notinterfere presser-foot andbe caught by the needle.

with its advancement by the feed-surface. To enable this feed to takeplace properly the pressure of the holdingdevice is automaticallyreleased at intervals.

In case the holding-finger is a part of the presser-foot, the pressurewill be relieved when the foot is lifted by the feed-surface of theordinary four-motion feed in its ascent. With an independent device therise and fall of the finger at the desired times are effected byappropriate means, deriving motion from some rotary or vibratory part ofthe machine or of the shearing mechanism. Knit goods when out have agreat tendency to curl at the edges, and this tendency, except with avery narrow margin or a wider presser-foot than is desirable, is apt tocause the edges to turn over the To avoid thisdifficulty araisedprojection around the front of the needle is employed.

One of the cutters or cutting-blades of the shears is made capable of amovement substantially at right angles to the line of cutting, and isconnected with a spring arranged to retain its cutting-edge in closecontact with that of the other cutter. The movement referred vto is notsuch as the blades of ordinary shears or scissors have upon theirfulcrum, but a true line-movement, so that the cuttingedges are alwayspressed together with ap proximately the same force.

In order to still further improve the cuttingaction for knit goods, oneof the cutting-edges is made oblique to the line of cutting, and thecutter with which the spring is connected is at each operation of theshears moved in one direction by the action of the cutting-edges againsteach other in closing, and is returned by the spring when they open. Asherein shown, the oblique cutting-edge is formed on the stationarycutter, and the spring acts upon the vibratory cutter or blade, wh lCllis attached to a rock-shaft operated from the main shalt or from anyrotary or vibratory or reciprocating part of the machine, throughconnections which permit a slight endwise movement to said shaft.

The stationarycutter or shear blade consists of a bar or plate, on theend of which the cutting-edgeis formed. This bar or plate is adjustablysecured in position, so as to be readily removed ior sharpening or otherpurpose, and to be set in contact with the other cutter as may berequired. The cutting-edge slightly oblique to the line of cutting canbe easily formed on this plate or bar. The latter also, being ofsuitable length, the fabric, or a portion thereof, can be clampedbetween its surface and the holding finger or device. The adjustmentbefore referred to takes place lengthwise of the bar, substantially atright angles 'is or may be fed over the shaft.

cloth-plate, the surface of the stationary cutter being on an incline,so that one of the several portions-usually the trimmed-off strip' Thereare special advantages in this disposition but, if desired, the saidshaft may be placed under the cloth-plate and the stationary cutter setin flush with the latter. In this case the main portion of goods wouldbe diverted slightly to one side by the vibratory blade. The clothplatewould, however, be left clear, which would be an advantage in someinstances.

The regulation of the closeness of the cutting or trimming to the lineof stitching can, it is obvious, he elfected by adjusting the frameworkwith the two blades or cutters in any ordinary or suitable way nearer toor farther from the needle; but it is an improvement to make theframe-work stationary and adjust the blades.

ments of the stationary cutter at right angles to the line of cutting,and by adjusting the stationary cutter the shears would cut more or lessclosely to the line of the stitching. In order, however, to diminish thewear upon the cutters bycontining their pressure against each other asmuch as may be to that portion by which the cutting is to be done (whichwill be a greater or less distance, ac

cording to the length of the feed) an adjustable back stop is arranged,so that the rockshalt carrying the vibratory cutter bears against itduring a portion of its vibration, but is moved out of contact with itwhen the cutting takes place. The back stop is shown herein as a thumbor set screw; but other adjusting devices may be used a cam, forexample. By using a screw or similar device the vibratory blade can beadjusted with precision to the position required. The stationary cuttercan then be adjusted into contact therewith, the vibratory blade beingset at its highest point or at the point where it is desired that thecutting should begin. justment of the shears is in this inventionusually efl'ected in this way. There are also particular constructionsand combinations of" Figurel is a perspective view of a sewingmachineembodying a trimmer constructed in accordance with this invention.Figs.2, 3, 4, and 5 are respectively a plan, side elevation,

and views from opposite ends of the trimmer and connected parts of thesewingmachine shownin Fig. 1. Fig. 6 is a perspective view of thetrimmer with the presser-i'oot and holding-finger removed; Fig. 6, adetailed view in horizontal section, showing the means for The vibratoryblade or cutter be-- ing held in contact with the other by a spring, Iit would, unless checked, follow the move' The adattaching the vibratorycutter to the rockshaft; and Fig. 7 represents in perspective and planviews the presser-foot with attached holding-finger. Figs. 8, 9, and 10are respectively a plan, sideelevatiomand rear elevation of thepresser-foot, with holding-finger attached at the rear, and showing apart of the stationary cutter in position. a Fig. 11 is a sectionalelevation, showing another form of stationary cutter or blade from thatshown infigures before mentioned, and also the manner of holding theblade in position. Figs. 12 and 13 are respectively a plan and sideelevation, and Figs. 1 4 and 15 views from opposite ends of anarrangement of cutters with the rockshaft operating the vibrating cutterbelow the cloth-plate. Figs. 16, 17, 18, and 19 are similar views,showing a holding finger or device with intermittent pressure andindependent of the presser-foot.

The machine represented is one which makes a chain-stitch by means of an1 eye pointed needle and looper, and has a four-motion feed under thecloth-plate. being the well-known Willcox & Gibbs machine. In Fig. 1 theautomatictension in common use in these machines is represented.

The same letters indicate like parts where they occur on all thefigures.

A is the main or looper shaft; A, the clothplate; B, thepresser-tbot; B,uprightprojection on the presser-foot; O, the holding finger or device;D, the stationary. cutter or blade; E, the vibratory cutter or blade; F,a' rock-shaft; G, the supportingframe; H, a spring; I, an adjustableback stop to rockshaft; L, a link for conveying motion from an eccentricon the main or looper shaft to the rock-shaft. i

The frame G is secured in position on the cloth-plate as in Figs. 1 and6 and 16 to 19, or below it, as in Figs. 12 to 15, and in bearings onsaid frame the rock-shaft is supported so as to vibrate freely. and tobe capable ofan endwise movement. The spring H is shown as a spiralspring surrounding the shaft. It is inclosed in the frame, and isarranged to hear at one end against a stationary partof the frame and atthe other against a pin or collar on therock-shaft, so as to hold theshaft against its back stop, I.

From the roeleshal't, at or near the rear or right-hand endthereoflprojects an arm, f, with which isjointed one end of the link IIby means. ofthc pin f. This pin has a bearing somewhat longer than thethickness of the link, so as to allow it an endwise movement independentof the latter. The other end of the link encircles an eccentric on themain shaft of the machine, and isheld in position by two collars, Z, onsaid shaft.

The back stop, I, is shown as a thumb or set screw, this being thedevice best adapted to the purpose. By turning this screwin onedirection the rock-shaft is advanced against the other direction itismoved back by the spring. The connection with the main shaft does notinterfere with these motions,owing tothe long bearing of the pin f.

The rock shaft F is back of the presser-foot and looper-shaft, andextends from a point close to the presser-foot over the edge of'thecloth-plate, and the vibratory cutter or blade E is held flatwiseagainst the end ofsaid shaft next to the presser-foot.

As shown, the end of the shaft is provided with an enlargement, f, tothe facof which the vibratory cutter or blade is secured, being held bya screw, 9, and prevented from turning on said screw by a steady-pin, g.The said" cutter or blade E is vibrated with the rock-shaft by means ofthe eccentric on the main shaft, and is adjustable by the back stop andspring. When the rock-shaft is placed below the cl0th-plate the latteris slotted for the passage of the vibratory blade as shown at a, Fig.12.

The stationary blade or cutter D is supported by the cloth-plateparallel with the rock-shaft F, and guided so as to be capable of anendwise movement at, or approximately at, right angles 'to the line ofcutting of the shears, and it is held by means of a screw, d, in theposition to which it is adjusted.

The screw d acts as a clamping device, and the blade or cutter D may beremoved from isfixed guides byloosening, without removing, said device.

The two shear cutters or blades and the mechanism for operating thevibratory cutter or blade are combined and arranged as shown, so that inoperation the two cutting-edges do not entirely separate, but cross eachother at all times; and it is impossible for the work to pass withoutevery thread between the trimmed-oft strip and the body of the goodsbeing severed.

In order that the two cutters or bladesv may be placed near the needleto trim close to the scam, the presser-foot is cutaway as shown at a,Figs. 7 and 8, upon one side of the needle.

which, if extended, passes over the rock-shafts The cutting-edge isformed by beveling the end of the bar, and, being in the plane of theupper surface of said bar, the line thereof would of course, ifextended, pass over the rock-shaft. The portion of the supportingframenearest the needle is made to form a continuation of the upper surfaceof the stationary cutter, sothat the severed portion can be readilycarried over the shaft. The triangular form of blade is preferred whenthe rock-shaft F is above the cloth-plate; but a fiat, orsubstautially-fiatfbar could be supported with its upper surface in aninclined position, as shown in Fig. 11, in which one edge works in aslot in the frame G and the other, being beveled, rests upon theclothplate.

The bar or plate with inclined surface acts to divert the trimmed-offstrip upward to facilitate the passage over the rock-shaft.

In Figs. 12 to 15 the stationary cutter is formed of a flat bar andslides in a groove in the cloth-plate. This form of cutter is bestadapted for use in connection with a vibratory cutter operated by arock-shaftbelow the clothplate. In any case the bearing for therockshaft which carries the vibratory blade may be placed close to thelatter and the necessity avoided of an overhanging or projecting end forthe passage under it of the severed portion of the goods. In all thefigures the edge of the stationary cutter is slightly oblique to theedgeof the vibratingcutter, or,inother words, as the latter is arrangedto vibrate in planes parallel to the feed movement, to the line ofstitching. Ateach closing of the shears, therefore, the vibratory bladeor cutter is forced sidewise, carrying with it the rock-shaft, removingthe latter for a time from contact with its back stop and compressingthe spring H. As the shears open the spring acts and forces therock-shaft again into contact with its back stop, upon which it bearsuntil the cuttingedges again come into contact with each other. The backstop being adjustable, it follows/that the cutting-edges may be allowedto make contact for a regulated portion of their length corresponding tothe length of stitch, and thus confine the cutting and consequent wearof the edges to that portion.

The holding finger or device 0 has its under surface roughened orprovided with teeth, as indicated. It is shown in Figs. 1 to 5 and 7 to1.0 as attached to or formed in one piece with the presser-foot. It isarranged and conformed to the upper surface of the cutter D, so as topress thereon when the presser-foot is down and the feed-surface isbelow the plate. It is at this time that the shearing action takesplace, and the fabric, being clamped by the cloth-plate and presser-footon one side of the. line of cutting and on the other by theholdlug-finger and lower blade or stationary cutter, is effectuallyprevented from being pushed away from the rock-shaft or fulcrum of theshears and from being drawn between the blades or cutters without beingsevered.

Owingto the construction of the lower blade with a plane or fiat uppersurface and the cutting-edge formed on its end, it is practicable toclamp the material by means of the holding finger or device close to thecutting-edge, and a very narrow strip can therefore be trimmed. With theusual thin blade projecting above When the feed The holding-finger isseparated from the body of the presser-foot so as to leave a suffi=cient space within which the vibratory blade may operate and be adjustedsidewise. In Figs. 1 to 5 and in Fig. 7 it is shown attached to andprojected backward from the front of the presser-foot. In Figs. 8 to 10it projects forward from the back of the foot. In Figs. 16 to 19 theholding device is independent of the presser-foot. It is formed bya baror finger, 0, attached to a rock-shaft, F, supported in bearings, andhas an arm, f, projecting over the arm f of the rock-shaft F. Gonnectedwith the rock-shaft F is a spring, H,

tending to turn it in the direction to hold the finger O in contaetwiththe stationary cutter. A spiral torsion-spring surrounding the rockshaftand connected at one end with it and at the other end with the frame isshown, but a flat or other suitable form of spring, if properlydisposed, could be used instead. The end of the arm f is so disposedwith respect to the arm f that as the latter is lifted by the link L andthe eccentric on the main shaft of the machine it comes into contactwith said arm f and vibrates the rock-bar F, relieving the pressure ofthe holding-finger. As the arm f descends the spring forces down theholding-finger and the pressure of the latter on the goods is restored.In these figures the spring H, the adjustable back-stop I, and otherparts shown in the other figures are not represented.

The upright curved projection B is placed in front of the needle andprevents the goods from curling or being turned over the pressercuttingaway the latter in front, also assistsin flattening the goods or takingout the curl, the curled portion of the goods as it passes through themachine coming in contact with the inclined surface at the base of thetoe or with the curved upright B.

In order to operate the machine the thicknesses of fabric to be unitedand trimmed are placed under the presser-foot, (the trimmingblades orcutters being properly adjusted and the machine threaded,) the machineis started, and the goods as they are fed forward are severed by thecutters.

It is obvious that various modifications may be made in the detailswithout departing from the spirit of this invention. rangementsdescribed may be of special utility unden different conditions. In usingthe form with the rockshaft above the cloth-plate neither of the severedportions of the goodsis turned aside, but theyboth continue in the Thedifferent ar-- samedirection,following the cutting-edges,one portionpassing over the rock-shaft and the other under the vibratory blade orcutter. With the shaft under the plate one portion will be slightlyturned aside. The trimmer with rock-shaft above the cloth-plate may bereadilyarranged'. if desired, to admit of trimming 011' or severing aborder or strip of 'any width that can be accommodated under thestationary arm or goose-neck of the machine.

Having thus fully explained the said invention and the manner ofcarrying the same into effect, what we claim is- 1. In a sewing-machinetrimmer, the combination, with the cutting-shears, of means, asindicated for clamping and thus holding stationary the fabric onopposite sides of the line of cutting during the operation of theshears, substantially as described.

2. In combination with the presserfoot, feed, and stitch-formingmechanism ofa sewingmachine of ordinary or suitable construction, astationary cutter, a vibratory cutter, and a holding finger or device,said presser-t'oot and holding finger or device being arranged to clampthe fabric during the cutting operation, the one upon the stationarycutter and the other upon a surface on the opposite side of the line ofcutting, substantially as described.

3. In combination with automatic shears, a holding finger or deviceroughened or provided with teeth and operating substantially as de- 1scribed.

4. In combination with a sewing-machine, a trimming attachmentcomprising a movable cutter, a stationary cutter formed of a bar orplate arranged substantially at right angles to the plane of movement ofsaid movable cutter and adjustable independently thereof, and mechanismfor operating said movable cutter so that the edges of the two cuttersdo not entirely separate but cross each other at all times in operation,substantially as described.

5. In a sewing-machine trimmer, the combination, with a stationarycutter formed of a bar or plate and a vibratory cutter, of a holdingfinger or device arranged to clamp the material to be sewed and trimmedbetween itself and said plate or bar, substantially as described.

6. In combination with the cloth-plate, presser-foot, feed,and'stitch-forming mechanism of a sewing-machine, a vibratory cutter, astationary cutter formed of a plate or bar, and a holding finger ordevice arranged above said plate or bar, and connected with means forrelieving its pressure intermittently, substantially as described.

7. The combination, with the eye-pointed needleand otherelements ofasewing-machine, and a trimming attach ment for trimming goods as sewedby said machines, of a presser-foot and an upright projection or shieldin front of the ncedles path, substantially as described.

8. A p'resserfoot cut away at the front to form a toe, and provided withan upright projection in front of the needle-hole, substan tially asdescribed.

9. A presser-foot having a portion cutaway close to the needle-hole onone side, and provided with an upright projection in front of the needlehole, substantially as described.

' 10. In a shearing device, the combination, with a stationary cutter orbladeand a vibratory cutter or blade, arranged to operate in connectionwith each other, and one being capable in operation of a line-movementsubstantially at right angles to the cutting-edges, of a spring arrangedto act upon the blade capable of the aforesaid movementand press saidedges into contact with each other, substantially as described.

11. The combination of arock-shaft capable in operation of endwisemovement, a spring connected with said shaft, a vibratory cutter orblade attached to said shaft, and a bar or plate having a cutting-edgeand capable of adjustment, substantially as described.

i 12. A pair of shear-blades or cutters having cutting-edges slightlyoblique to each other, and one of said cutters or blades being capablein operation of a line-movement approximately at right angles to thecutting-edges, in combination with a spring arranged to act upon theblade capable of the aforesaid move- .ment and hold said cuttingedges incontact,

substantially as described.

13. The combination of a rock-shaft capable ;of endwise movement, cutteror shear-blade attached to said shaft, stationary cutter'or blade withoblique cutting-edge, and spring arranged to force said shaft and cutterattached thereto in the direction to maintain the cutting-edges of thetwo cutters in contact with each other, substantially as described.

14. The combination, with a cutter or blade stationary during itsoperation but capable ofadjnstment, of a vibratory cutter or blade,rock-shaft carrying said cutter, spring, and adjustable back stop forsaidshaft.

15. The combination with a stationary and 1a vibratory cutteror bladehaving cuttingedges slightly'oblique to each other, of a rockshaftcarrying said vibratory blade or cutter, a spring, and an adjustableback stop for saidshaft, substantially as described.

16. Thecombination oftherock-shaft, spring, adjustable back stop,vibratory cutter or blade, bar,orplate, with cutting-edge at one end,andmeans for securing said bar or plate in position and for permitting itsadjustment at, or a 'iproximatelyat, right angles to the cuttingedge.

17. The combination, with the stitch-form ing and feed mechanism of asewing-machine of ordinary or suitable construction, of a rockshaftconnected with and operated byasuitable moving part of said machine,avibratory cutter or blade attached to said shalt, means for adjustingthe position of the said shaft and cutter nearer to or farther from theneedlehole of the sewing-machine, and a second outa gamma ter or bladestationary duringits operation and also adjustable, substantially asdescribed.

18. In a sewing-machine trimmer, a rockshaft, and vibratory cutter orblade attached to and carried by said shaft, combined with a stationarycutter or blade, as described, said shaft being arranged below the lineof the cutting-edge of the stationary cutter or blade, so that inoperation the severed portion of the goods may pass over said shaft.

, 19. In a sewing-machine trimmer, acutter or blade formed of a plate orbar with the cutting-edge at the end thereof, in combination with arock-shaft arranged below the plane of the upper surface of said bar orplate, so that said surface if extended would pass over said shaft, andavibratory cutter or blade attached to said rock-shaft, substantially asdescribed.

20. An automatic trimmer for operation in connection with asewingmachine of ordinary or suitable construction, comprising thefollowing elements a stationary bar or plate with oblique cuttingedge atthe end thereof, means for adjusting said bar or platc,a finger ordevice for holding stationary the work, or a portion thereof, whilecutting, a vibratory blade or cutter, a rock-shaft, spring, andadjustable back stop, substantially as described.

21. The combinatiou,with asewing-niachine and a shearingattach1nent,ofadjusting mechanism, as described, comprising a thumb or set screwadapted to regulate mechanicallythat is, by its own proper motion--th eposition of the cutting device forming part of said attachment relativeto the stitching devices of the sewing-machine, substantially asdescribed.

22. In a sewing-machine trimmer, a flat cutter bar or plate held betweenfixed guides in or on the cloth-plate, and a clamping device arranged tobear against said bar or plate, so that the latter can be withdrawnbyloosening without removing said clamping device, substantially asdescribed.

23. In a sewing-machine with trimming attachment, the flat blade heldagainst the end of the rock-shaft by a screw and prevented from turningon said screw by a suitable projection, such as a steady-pin,substantially as described.

24. In a sewing-machine with trimming attachment, the rock-shaftcarrying the vibratory cutter, and supported, as described, on

the cloth-plate, so that the trimmed-off strip will pass over the shaft,substantially as described.

25. In asewing-machine with trimming attachment, the combination, withthe rock-shaft supported in bearings on the cloth-plate and cutterattached to said shaft, of an inclined plate located in front of therock-shaft, substantially as described. 4

26 The combination, with a sewing-machine having a looper-sliaft belowthe cloth-plate, of a rock-shaft supported back of the presser-foot andlooper-shaft and extending from a point close to the presser-foot overthe edge' of the cloth-plate, a cutter secured to the end of saidrock-shaft adjacent to the presser-foot, so as to project toward theneedle of the sewing'ma chine, substantially at right angles to saidshaft, and an operating-arm attached to the overhanging end of therock-shaft aforesaid and connected with an eccentric on'the loopershaft,as set forth.

27. In a sewing-machine with trimming at tachment, the combination, withthe presserfoot, finger, and vibratory cutter working between said footand finger, of an llongated bar or plate adjustably supported in guideson the cloth-plate and projecting under the said finger, so as toco-operate with said vibratory cutter to trim the fabric as it is sewed,substantially as described.

28. The combination, with the cloth-plate, presser-foot, andlooper-shaft of the sewingmachine, of the frame carried by saidclothplate, the rock-shaft supported in bearings in said frame andextending from a point close to thepresser-foot beyond the edgeot theclothplate, an eccentric on the looper-shaft, connections between theprojecting end of the rockshaft and said eccentric, a vibratory cutterattached to the opposite end of the rockshaft,

and an elongated bar or plate supported parallel with said cloth-plateand adapted to cooperate with said vibratory cutter, substantially asdescribed.

In testimony whereof we have signed this specification in the presenceof two subscrib- IOO

